If you do decide to make these for sale you will want to avoid using any GW models in the picture, or they will throw a hissy fit. Also don't state what models they are intended to fit, or they'll deem it "derived" from their IP as currently shown and posted about.

Not saying you shouldn't go for making the parts, just tread carefully.

Outside of that it looks great and people will be drooling when it's done.

Looks really nice and interesting. Would love to be able to try one of this just to see and make sure how things are going to run on my own implementation. Hopefully, there will be more available options when I finally do and start something similar on my own. Interesting enough, a lot of other people are actually looking forward to making them happen just like that.